Question

1/3х+3/8*(х-1/3х)+100=х

Answer 1

1/3х+3/8*(х-1/3х)+100=х
1/3x+3/8x-1/8x+100=х
8х+9х-3х+2400=24х
14х+2400=24х
-10х=-2400
х=240

Answer 2

$frac{1}{3}x+frac{3}{8}*(x-frac{1}{3}x)+100=x$
$frac{1}{3}x+frac{3}{8}*(frac{3}{3}x-frac{1}{3}x)-x=-100$
$frac{1}{3}x+frac{3}{8}*frac{2}{3}x-x=-100$
$frac{1}{3}x+frac{1}{4}x-x=-100$
$frac{4}{12}x+frac{3}{12}x-frac{12}{12}x=-100$
$-frac{5}{12}x=-100$
$x=-100:(-frac{5}{12})$
$x=-100*(-frac{12}{5})$
$x=frac{1200}{5}$
$x=240$